Albert kazenmayer and louis valois



-Qnitth tatie nnt @fitte Letters Patent No. 74,375, dated-February 11, 186.8.

IMPEovBD BUBGLAB-ALAEM.

@In ,rlgehtlsnftmh tu l in time etttts irteut mit mating 'parini-.tige same.

To ALL WHoM IT MAYCONCEBN: y

Be it known that we, LoUIs VALoIs and ALBERT KAZENMAYEB, of Newark, in the county of Essex, and

Stote of New Jersey,` have invented a. new and improved Burglar-A1nrni; and we do hereby declare that `the followingis a fnll ondexact description of the same, reference bcing had to the accompanying drawings, and to the letters of reference marked thereon. y

By reference vte the drawings, it will be seen thotA is bolt, to be operated by' the spiral spring B, and

slides in the studs `C D, which studs are ,fastened to the plate E; and, when in ilse, the plate is secured to the4 door-casing F, nezu to the edge of the doorG. H is a. lever, hinged at I, and, when the alarm is not set for use, .is thrown bock against the casing. lIn that event, the bolt drops down upon the cover K ofthe torpedo or percussion-box L4; but, when set for use, the lever is swung round under the bolt to prop itiip, and the cover is slipped oil' the box. Y v l The lever resting on the shoulder m, when the alarm is set, the end of it passes by the edge of the door, the opening of which pushes the lever from under the bolt, which, by the spi'ingfis projected down into thebox upon the lpercussion or torpedo, and the explosion sounds-an alarm. v l

`This becomes a simple and very efficient alarm, as the door cannot he opened without the explosion.

We do not claim the principle of an explosion. on the opening of a door, asit is not new; but

What we claim es our invention, and desire to secure by-Letters Pntentf'isandfor the purpose specified.

The combination of the box L with its hinged cover K, and the lever H with b olt A and spring, all as' ALBERT KAEENMAYER, LoUIsyVALoIs.

Witnesses: f

DAVID C. TIcHENoR, JAMES BoTiIoH. 

